Selecting and typing means for printing telegraphs



A. H. ADAMS 2,161,840

SELEC'IING AND TYPING MEANS FOR PRINTING TELEGRAPHS June 13, 1939.

Filed Feb. 18, 1936 6 Sheets-Sheet l INVEN I'OR A. H. ADAMS 2,161,840

SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS June 13, 1939.

Filed Feb. 18,

1936 6 Sheets-Sheet 2 A. H. ADAMS June 13, 1939.

SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS Filed Feb. 18, 1956 6 Sheets-Sheet 5 www t t EN www @www A. H. ADAMS 2,161,840

SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS June 13, 1939.

Filed Feb. 18, 1936 6 Sheets-Sheet 4 alg/a INVENTOR June 13, 1939.

A. H, ADAMS SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS JWM Filed Feb. 18, 1936 '6 Sheets-Sheet 5l THE QUICK BROWN FOX JUMPED OVER THE FENCE @f/2 flag June 1 3, 1939. A H, ADAMS 2,161,840

SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS F'iled Feb. 18, 1956 6 Sheets-Sheet 6 INVENTOR Patented June 1,3, 1.939

UNITED STATES PATENT OFFICE SELECTING AND TYPING MEANS FOR PRINTING TELEGRAPHS Application February 18, 1936, Serial No. 64,467

21 Claims.

This invention relates to improvements in selecting and typing means for automatic typing machines, especially for that class of typing machines electrically operated at a distance and A commonly called printing telegraphs and tickers,

and more particularly but not exclusively for that variety called page printers as distinct from tape printers.

Modern page printing telegraphs mainly fall into two classes: (a) typebar printers, in which individual type bars like those of typewriters are caused to strike the paper. Usually this class uses an ordinary typewriter ribbon and makes carbon copies. (b) typewheel printers, in which a Wheel, or segment, having raised typefaces on its surface, is selectively moved to present the desired typeface to the paper. In these the typefaces are usually directly inked and carbons are not made.

Typebar printers generically offer advantages over typewheel printers in better visibility of matter being typed, (since the typewheel usually covers several letters) and in better ability to produce manifold or carbon copy Work. They require, however, moving either the paper, usually on a platen or cylinder, much as in a typewriter, which is undesirable for operating reasons, or else moving a quite large and complex basket or frame of typebars and of selecting and 30. operating devices. In either case they require to be materially larger. They a-re also inherently more expensive.

Typewheel page printers, inherently smaller and less costly because having the simple typewheel in place of the many typebars and because not having so large a printing carriage to traverse, have a further cost advantage in being able to use certain simpler and cheaper selecting mechanisms.

40 (c) There is a third or intermediate class, as regards typing means, attempting to combine the main advantages of both classes (a) and (b). This hasvbeen tried by utilizing the typewheel as a typebar, selectively positioning it, as by 45,rotation, and then swinging it like a typebar against the paper. There have been other and more successful attempts in which the typewheel or unitary typeface carrying member was replaced by a selectively positioned wheel or 50 frame carrying many individually movable'pieces of type, each so light as to be capable of being in a small distance sharply accelerated against the paper by a common type bar or hammer. In this class of machine it might be said that 55 typefaces are selectively changedl before a com- CAD montypebar or hammer. The present invention falls in this last class as regards the typing means preferred.

One of the difficult problems in combining the ribbon printing and manifoldingfeatures of the '5 typebar type with the compactness and simpler selection of the typewheel type is to keep low enough the mass or moment of inertia of the type member with the many individually movable types it carries. For printing on a variable thickness of papers and carbons the types may not tip or change in angle rapidly as 4they are advanced to the paper, else in some cases the top of the character and in other cases the foot will strike the harder and give shaded printing. For this reason the prior art type carryingrmembers most successful for manifolding are arranged to permit the individualtypes to slide in guides. This requires relatively long bodies or stems on the types and a relatively large frame, making the type member heavy and hard to position quickly without excessive shocks or stresses.

Type members in disc form bearing types on` the end of pivoted radial arms have been used, 25 but the arms are necessarily very short so that this design-though lighter-is not capable of good unshaded printing on papers and manifolds variable in thickness. One feature of my invention solves this problem by the provision, in connection preferably with the lighter disc form of type carrying member, of a common type steadying or guiding member having either a parallel motion or a long radius rocking motion, to which the selected type only is locked by the printing bar, whereby very short stemmed pivoted types may individually be advanced with little or no angular change. This is very important in relation to the selective type member positioning feature of my invention that will '40 be described, because a more massive type member with the simple and stopless selective displacement means I prefer, would require more force to accelerate and would consume time in oscillation, possibly even requiring the addition' 45 of special frictions or even of stops for'attaining high speeds.

One very important feature Yof my invention is the just mentioned selective type member positioning means, especially inl relation to the positioning of a type member on a movable carriage. To grasp the advantages of my type member selective positioning means, it must be understood that in modern typewheel printers there are two main methods of selectively positioning a type member, whether a unitary typewheel or a frame carrying individually movable types:

(1) There may be stops selectably set, for each desired position, against which an arm of the type member may be urged by a spring, a friction, or any not positive means of applying power to move the type member an indenite distance. In this method the type member may either continue on around, if circular, after the last selected stop has been removed from its path, or may be returned to a starting point.

v(2) There may selectively and additively be imparted to the type member one or more of-v several denite amounts of displacement from a fixed or Vdatum position. In this method the selectively energized positioning means for the type member may supply also the motive power to move it. The motion of the type member, when using this selecting method, may be, and preferably is, in either direction, the direction depending upon whether the total or additive displacement from thev datum point determined by one code is larger or smaller than that determined by the preceding code. Thus the type member may move from anyvposition directly to any other, neither returning to the datum point nor continuing a rotation. This is an important advantage, as regards time, shock and energy in type member displacement.

However, the prior art means for positioninga type member on a moving carriage, even using the simple selectably additive displacement method-method `2Vabove---al1 have Vinvolved either carrying selecting means on kthe moving Y carriage or transmitting selected motion accurately to the type member on the carriage by splined shafts, shafts and gears and/or other relatively massive mechanical transmitting mechanism.

My invention belongs broadly in class 2 as to selective type member positioning method, but uses, as will be seen, a flexible non-stretching tape and selectably movable looping pulleys for constraining the tape to a longer or shorter path, i. e., for effectively shortening or lengthening it.

My exible tensile means for additively imparting selected amounts of displacement to any member to be positioned, unlike those of the prior art, lend themselves, with almost no added parts, to positioning a member on a movable (or even on a moving) carriage justas easily as one mounted on a fixed frame. -Another advantage is that the same simple tape used as a selective displacement totalizing means and as a means of transmitting totalized selected displacements tothe type member on the moving carriage is equally adapted to transmit a case shift displacement to the type member which preferably carries the upper and lower case characters in two distinct areas. This makes the case shift consume much less power and be completed much more quickly than where the massive platen is raised or lowered, and makes theaverage movements of the type member materially less than where the two sets of charactersV alternate.

A further real advantage of the preferred form of my page printer with disc shaped type member is that it practically overcomes the advantage the type bar printer has heretofore had over the type wheel printer matter being typed. The printing pointV on my preferred disc-shaped type member is so chosen below and to the left of top center that both the line and the letter last completed are always legible.

in greater visibility of Another object is to provide a printer of thev type member or carrier-of-types class in which all characters already printed are legibly visible.

One object is to provide a printing telegraph machine with the types, in a disc form of carrier, oriented at such an angle and struck against the paper when at a point so much to the left and be- Y low the top center as to leave visible the line and the letter last printed.

Another object is the construction of an unusually simple and low cost means selectively to position a type member or other recording member in a telegraph receiver.

Anotherobject is the provision in a telegraph printer of one very light ilexible lamentary member as a common means to totalize selected elements of displacement from a datum and as a means to transmit to a type member such totalized displacement.

Another object is the provision of a page printer in which one light lamentary member serves to totalize selected elements of displacement and to transmit the totalized displacement toV a type member on a moving carriage.

Another object is the same as the last with the same iilamentary member also serving to transmit to the type member a case shift displacement.

Another object is the provision of a light and simple selective moving means for a type carrying member or wheel which will urge the latter from J:Dine selected position to the next, in either direcion.

Another object is the provision of such a selective type member positioning means comprising several independently and selectively operable movers, these movers additively imparting to the type member each its own predetermined amount of displacement from a datum point.

Another object is the provision in a manifolding printer of an exceptionally light and compact wheel or disc of types, each type being individually movable to printing position on a radius exceeding the radius of the disc in order to avoid carriage and a fixed axis paper roller whereby the overall width is reduced and paper handling and paper tracking adjustments are simplied.

Another object is the provision of a page print- Y er yielding regularly spaced typing by accurately registering the selectively positioned type carrier just before striking each type.

Another object is to provide `a shockless stopping against one spring forcefof a lightweight type carrier moved by an .opposing spring force. Another object is the provision cheaply of a time overlapin a printer-permitting occasional codes to be sent on time centers less than the mechanical cycle time of the printerby means of code storage magnets capable ofholding their armatures by residual magnetism until knocked down. Another object is to construct a moving or page printing typewheel carriage for ribbon printing that is entirely devoid of selecting means.

Another object is to provide a typewheel in which the letters or so-called lower case type are in one contiguous group and the figures and so-called upper case type are in another contiguous group and to provide .as a. case shift a mere turn .of the typewheel froml one group to the other to the end of approximately halving average typewheel travel over that arrangement where upper and. lower case type alternate, and to. the

end of making unnecessary the raising and lowering either of the typewheel or of the paper.V

Other objects and advantages attained will be evident from the description.

For purposes of illustration I have shown and described a structure in accordance with my invention that is adapted primarily for cooperation as a receiving printer with any of the modern commercial keyboard or tape transmitters and line arrangements, details being shown particularly adapted for start-stop. circuits using a Baudot type code of five time units .and electrical distributors. Printing telegraphs in accordance with my invention may equally well be adapted by one skilled in the art for use on multiplex circuits, or with any well-known mlechanical distributor, or with codes of more or fewer time units, or on entirely different kinds of codes.

In the drawings Fig, 1 is a sectional elevation, on line V-V of Fig 2, being a View, from the rear of the machine, of the main typewheel selective positioning means. 4

Fig. 2 is a sectional elevation on line U-U of Fig. l.

Fig. 3 is a sectional elevation of the typewheel and platen, showing typing barand centering pin, taken along line W-W of Fig. l.

Fig. 3A is an enlarged detailV of the type hinge not clearly intelligible in Fig. 3.

Fig. 4 is a sectional elevation, like Fig. l, looking from the rear of the machine, but on line Z-Z of Fig. 2, showing letter spacing and carriage returning mechanism not visible in Fig. 1.

Fig. 5 is an enlarged detail of the typing bar and centering pin shown in Fig. 3.

Fig. 6 is a sectional elevation on line Y-Y of Fig. 1 showing particularly the line spacing mechanism.

Fig. '7 is a sectional detail on line T T of Fig. 1.

Figs. 8 and 9 are details of one of the five code storing magnets.

'Fig. 10 is a sectional detail on line X--X of ,f Fig. 4.

Fig. 11 is a diagrammatic view of one form of typewheel and its relation to matterbeing typed.

Fig. l2 is a timing diagram showing cam rela- Fig. `15 isa view from the front of the machine of the arrangement of type on the Wheel of Fig.

Fig. 16 is a `diagram of a relation of tape and typewheelalternative to that shown in Fig. 1.

Y designates a platen or paper roller, 2 a paper guide, .3, 3 pressure rollers to cause a paper or papers to hug platen I. These paper handling parts are not shown or described in detail, being very Well-known inthe typewriter and printer arts. Platen I and associated paper handling parts do not move axially in this machine. This isadvantageous for several reasons, It is` harder tocause paper to "track properly on a moving platen, especially if fed continuously from rolls. It is less fatiguing to read messages coming in on paper that is stationary. Reciprocation of the long and m'assive `paper and platen also takes considerable space and consumes more energy and time .than the reciprocation of the light typewheel'carriage to be described. 4, IlA are carriage rails extending from side to side of the machine.

5 is a Vcarriage frame riding on rails 4, 4. This may be of metal or, in the interest of lightness, of moulder Bakelite or the like. 6 is a shouldered metal stud held in boss 9 by nut Stud 6 has an enlarged head 8. Typewheel body |0, preferably of moulded Bakelite or of light metal, runs on stud 6 and is confined axially between stud head 8 and washer '|I against the end of boss 9. Typewheel body I8 integrally carries two circular flanges, I| and |2, separated by a cylindrical neck portion or drum |3. A tape 4Ill which is preferably of very thin spring steel, but may be of Woven linen rubberized, or of any exible and relatively non-extensible and non-hygroscopic construction, is attached at one end on drum I3 and Wraps about it at least a full turn when not extended.

In rear flange I2 are a suitable number of accurately spaced bell-miouthed centering holes I5, one for each selectable position of the typewheel. A pointed centering pin |6 is arranged to enter holes |5 with very small clearance for accurately positioning typewheel body I0. This pin I6 is moved by coupling pin |68 integral with typing hammer 28. Thus centering pin I6 is withdrawn and shot forward together with typing hammer 28. Lever |09 bearing cam roller III) is pivoted on carriage frame 5 and is raised against spring and hammer spring I2| by-a traveling cam I|2 which is journaled at II3 in web III! of carriage frame 5. As the carriage moves, cam ||2 slides axially along the central square portion of shaft II5, which is driven from the main shaft 85 by spiral gear pair IIB, vertical jack shaft y| I1 and spiral gear pair II8. Shaft ||5 also carries fixed on it cam ||9 near its left end, facing the machine.

The end of -lever |09 lies in a fork of the rear end of hammer 28 and there engages cross pin |26 in its slotted end, withdrawing hammer 28 from advanced position and compressing spring |2| between horseshoe collar |22 and guide lug |23 of frame 5. Horseshoe collar |22 is slipped over neck |24 of hammer 28 and is kept in place by spring |2I. Cushion spring |25, 'footing against enlarged portion |26 of hammer'28, holds collar |22 to the far end of neck |24. When roller reaches the sharp drop of cam VII2 spring |2| drives forward hammer 28, made massive by portion |26, with such energy as to compress spring |25 and strike type 2| a sharp blow with aquick but limited rebound. Thus roller I Il may stay oncam low some -time, keeping pin I6 in hole l5 without the hammer touching'type 2| against the paper.

A helical torsion spring |1 surrounds boss 9 and engages a hole in frame 5 at the base. of boss 9 with its one end and typewheel body l0 with its other end. A number of like holes for engaging the'flrst end may be distributed about boss-9 inframe 5 to permit of adjusting the spring torque. Three pins |8, of which only one is fully visible in the section of Fig. 3, moulded or driven into typewheel body I0, engage radially elongated but laterally. close'tting holes |9 (seen bestin Fig. 1) in type guide disc 2|), thus angularly locating guide disc 20 relative to typewheel Vbody |D. 2|-2| are type having stems or bodies 22. These bodies, which are preferably proportioned thin and flat end in oifset or Z shaped ends 23 as shown in Fig. 3A, which are hinged or hooked in radial slots 25 in type'guide disc 20.

In `order that disc 20 shall not be weakened by Vhaving slots 25 all in one circle, the type bodies 22 of alternate types are made slightly longer, bringing alternate slots 25 in disc 20 in diierent circles. The oifset or Z shaped end of one of the longer bodied types is shown at 23 in Fig. 3.

A relatively stiff spring 26 footing against washer 12 which is heldby the enlarged head 8 of stud l6, presses guide disc 20 against flange the bodies 22 of the type being interposed as shown. The outer rim of guide disc 20 is formed back to surround flange as shown, and this formed back portion is slotted to receive the boides 22 of all the types 2|. It will be seen that the types are well located both radially and angularly in guide disc 2|), and that they are also normally held against the back of disc 20 by the face of flange But it will be seen that if disc 2|! is tilted or moved away from flange I the types can freely swing on their hinges but only away from disc 20.

The position of hammer, 28 and of the type struck by it, looking from the rear or platen side of the type wheel as in Fig. 1, is well to the right and below the top center of the typewheel, or to the left and below if looking from the front of the machine as in Fig. 11. As is seen in Fig. 11 this provides for legibility of the last letter printed. Because of this olf-center printing, that type in front of hammer 28 is not visible in the strictly central section View of Fig. 3. will readily be understoodffrom that View that when hammer 28--very heavy relative to guide disc 20 which may be of Duralumin or of a light embossed sheet metal construction-falls on the back of any type 2| the whole guide disc 20 is tilted about its diametrically opposite point and the type so struck is gripped rmly between the hammer pressure and the spring 26 acting through disc 20 and is swung against the paper exactly as though it were an integral part of guide disc 20.

No other type but the one struck is impelled toward the paper. In fact, due to inertia, when the Z or hinge ends 23, 23 of adjacent type are suddenly accelerated by disc 20 toward the paper, their heads momentarily react all the harder against flange I Hammer 28, as described, instantly rebounds, dueto spring |25, from its printingposition far enough to permit disc 20, under pressure of spring 26,'to press all types again against flange but the struck type can have been shaken against the paper. The long radius of action for the struck type provided by the common tilting guide disc 20 isa great advantage. It produces an spring 1.

But it This occurs before any action comparable to that of type ybar type in that the faces strikeV evenly whether on single papers or on thick manifolds. Y

Spring |1 urges typewheel body |0, with guide disc 20 and all the types 2|, in a counterclockwise direction as .viewed in Fig. 1. end wrapped on and fastened to drum |3 of body |0,.passes over shift pulley 29, next over adjustable idler 3U, then in order over 4-unit looper pulley 3|, 1-unit looper pulley 32, 8-unit looper pulley 33, 2-unt looper pulley 34, 16-unit looper pulley 35 and xed idler 36 to an attachment on retractor drum 31. This latter is driven clock- Tape. I4, at one t wise, as viewed in Fig. 1, by spring 39 (Fig. 6)

acting on spindle 38 on which retractor drum 31 is fastened. The rotation clockwise (in Fig. 1) of drum 31 is limited by stop pin 40, that it carries, and stop pin 4| in frame 5. Spring 39 is made approximately twice as strong in rotating typewheel body VIl) (by way of tape I4) asis Looper pulleys 3| to.35 are journaled on studs 42-42, all alike, riveted in the ends of looper levers respectively 43 to 41. These looper levers are all pivoted on like studs, 5|)-50, supported between frame plates 48 and 49. They are all constructed of sheet metal, as light as possible, and at their pivoting end each is formed into a U shape to bear on studs 50 at two separated points, e. g., the U (41, 52, 5|) visible in Fig. 6.

This gives the steadiness of a long bearing to the looper levers with a light construction. To avoid multiplying figures, a view of the U shaped bearing end of only one looper lever, 41, has been l shown. As will be seen in Figs. 1 and 6 vthe looper levers rock on studs 50 `close to one side of frame plate 48, while the studs 42, carried at their ends, project through openings 52, 53, 54, 55 and 56 in that plate. These openings vary in height and are accurately machined on one edge. l

Studs 42-42, where projecting beyond frame plate 48, carry looper pulleys 3| to 35 already mentioned. These pulleys are guided and are held on these studs, and tape |4 is kept on these pulleys by cover plate 51. This plate is removable to facilitate the threading of tape 4 and replacements in case of need. A second plate 58, of the same thickness as 51 and in the same plane, similarly confines and guards shift pulley 29 and tape 4 upon it. Cover plates 51 and 58 are attached to frame plate 48 by screws and spacing collars as best seen in Fig. 10, these screws and collars being all alike and numbered 60 and 59V respectively. To simplify the drawing, only numerals 6i) are shown on Fig. 1, where the location of these screws is best seen.

Pivoted on studs 50, within the U bearings of the five looper levers 43 to 41, are respectively selectable arms 62, 6|, 64, 63 and 65. These are selectively engaged with power bar Sii- Which is reciprocated in guides 66A by cam 14, roller 15 and spring 13-and are moved by it to the right, Fig. 1 point of view. The selective engaging means will be described later. When all or any of these five selectable arms are so moved their bered on all ve arms-engage the corresponding looper levers 43--41 on their cross pieces 52. These latter show in section in Fig. 1. At the end of the travel of power bar 66 and hence of any engaged selectable arm the corresponding looper pulley willfhave been forced as far as it may go, thus extending tape I4 asfar as that pulley may do. In this position power bar 66 dwells a brief period, holding any engaged arm,

Y|55 upward projecting lugs 61,-alike and like numlooperllever and looper pulley at extreme position.

Assuming, to begin with, that retractor drum 31% has been, by spring 39, rotated clockwise to its limit wherepinsV 4D and 4I are in contact, and thatitypewheel body I 0 has been rotated by spring I'Tcounterclockwise as far as. it will go, we then have the shortest. possible free length of tape I4, both ends having been wound up as far as they can go. Pulley 3| is then (as shown) at the top of its path with its stud 42 in contact with the accurately located top of opening 52. Pulley 32 (as not shown) is at its low point with its stud 42V in contact on the accurate lower edge of opening 53. Pulley 33 is at its top (as not shown) with stud 42v contacting the top of opening 54. Pulley 34 (as not shown) is at its low point with stud resting on lower edge of opening 55. Pulley 35 is at top with stud 42 touching top of opening 56.

Under these conditions-shift pulley 29 remaining as shown-the length of tape I4 should be such as to bring the typewheel to rest at what may be termed the datum position. This is that position whence one angular step will bring to the typing hammer the iirst character of the alphabetical order used. This iirst letter may or may not be A, depending upon what letter may be chosen for that code that represents one step away from datum position.

To digress, it is obvious that an order of letters on the typewheel quite diierent from the ABC order is the one that gives, in this mechanism, the smallest average motion of the typewheel per character typed. Letters most frequently used in juxtaposition in the language would be placed in most' nearly juxtaposed relation on the typewheel; those next most frequently so used being in the next most close relation on the wheel, and those most rarely so used being the farthest apart on the wheel. There are, however, many considerations of established codes and of code interchangeability that affect the choice of alphabet order.

In the above-described shortest free length condition of tape I4, the typewheel, it was said above, should be at' the datum position. If, due to a tape of incorrect length or to wear or other changes, this is not the case, an adjustment of idler pulley 30 is provided to attain this relation. When the tape is eiectively too long this pulley is raised, and vice versa. This is done by loosening screw 68 and turning eccentric stop 69 so as to raise or lower arm 19, then retightening. Pulley 30 rides on a stud 42 in arm 10 and is guarded and guided between frame plate 48 and cover plate 5.1 exactly like looper pulleys 3l to 35 except that arm 10 does not move but remains resting on eccentric 69, being always drawn down by the tension of tape I4.

This datum position or shortest free tape condition is never assumed in operation. It represents the unusable code of five spacing impulses. It is an arbitrary reference and adjustment point. Having established it, we may now assume that some combination of the selectable arms 6I to 65 is to be moved to the right-such as 5I, 62 and As will be seen from a study of the cam relations-best seen in timing diagram Fig. 12 at the time power bar 66 moves to the right, centering pin I6 is in a hole I5 and is locking the typewheel. On the assumption of a start from datum position, the typewheel will be locked there.

The motion of arms 6I, 62 and 65 to the right raises looper pulley 32 and lowers looper pulleys 3-I and 35. The resting or short loop positions ofthe pulley studs 42 against the. edgesY of open-l ings 52 to 561 are accurately machined in relation to the extended lor long loop positions given by bars 6I to 65. Thus looper pulley 32, on being moved away from the foot of opening 53 when arm 6I is moved to the right, takes up exactly enough tape to rotate the typewheel one angular space, i. e., the distance from one character to the next. Moving the arm 62 to the right takes up tape equivalent to four angular spaces of the typewheel; and arm 65 takes up tape equal to 16 angular spaces. Arms 63 and.y 64. take upy 2 andv 8 of these units respectively.

The typewheel being lockedin datum position by hypothesisarms 6I, 62 and 65 on operating take up amounts of tape equivalent to 1 plus 4 plus. 16:21 typewheel spaces. Thisis at rst drawn oif the retractor drum 3.1 against the tension of spring 39. The timing is such that, when about half of the 21 units has drawn oil? drum 31", centering pin I6 releases the typewheel. Spring 39, through tape I4 and drum I3 generates the greater torque at the typewheel by about two to one and overcomes spring I.1. The typewheel spins clockwise as the 8 or '10 units. of tape withdrawn from retractor drum 31 is retracted. In the'same time the movement of arms 61,32 and 65 and their looper pulleys continues, further taking up tape I4, until the typewheel is drawn around the full 21 units from datum position. At this point the pull on the tape quite sharply stops because the retractor drum and looperY pulleys reach their limits. Energy Astored in the typewheel causes some overthrow.

The preferred typewheel is so light, for one having independent manifolding types, due to the construction described, that high speeds may be obtained with relatively weak springs, i. e., with low energy. The overthrow isf opposed by spring I1 which has been increasing more in tension the farther and faster the tape and spring 39 have spun the typewheel. There is provided an incidental damping friction due to spring 26 pressing the typewheel body against iibre washer 1I on the face of boss 9. A stopping of the typewheel is 'thus obtained in which the stored energy is dissipated fully as quickly as is needed for high speed typing, fyet without shock. The 4centering pin I6 next darts into the hole I5 at position 2 I'- this accompanies and very slightly precedes the blow of the typing hammerandthe bell mouth of hole I5 with the pointed end of rpin I6 enforces correct centering if the amplitude of the typewheel oscillation at that instantis only less than one type space. Letter numbernZI is printed.

Having considered the operation of the selecting means'when producing a large clockwise displacement of the typewheel (always viewed as in Fig. l), let us consider Va reverse displacement. The typewheel is now held by centering pin I6A at position 2 i. As will be seen from the timing diagram, power bar 66 is first quickly returned toy the left. This permits the operated arms 6I, 62 and 65 to follow to the left under the influence of springs 16, 11and 80 respectively. (Springs 18 and 19. similarly restore arms 63 and 64 respectively, when operated.) As this occurs slack would be thrown into tape I4 if the corresponding looper levers and pulleys, 44 and 32, 43` and 3|, 41 and 35 followed. But springs 8I, B2`and 19 respectively retain the three operated looper le- A vers in their existing or long loop positions Vand maintain snugness in tape I4. Springs 11 and 16 would act in the same way, when needed, to re- `bered position and to a lower numbered one.

4typed to the new one.

tain respectively looper levers and pulleys 45 and 33, 46 and 34 in long loop position.

rThe typewheel is now held at position 2|; the retractor drum 31 has taken up all it can of tape |4, being against its stop; the 2| units of tape length corresponding to typewheel position No. 21 are lightly held out by springs 8|, 82 and 19 so that slack in tape |4 will not occur. Let us assume the combination of selectable arms 6| and 63 will nextbe engaged by bar 66 and moved to the right. These two, or the looper leversthey operate, can take up only 1 plus 2:3 units of tape. 'I'his is a very small part of the 21 units of tape length now available before any can be pulled from lthe'retractor drum 31. Furthermore, before bar 66 has completed its power stroke and taken up'even the Vthree units (through arms 6| and 6,3) the centering pin releases the typewheel. This time, because there is a surplus rather than a deficit of tape length and because retractor drum 31 hasnot been unwound at all, it is spring |1 that spins the typewheel, counterclockwise, un-

til the tape tightens suddenly against the retrac-` tor drum 31 and its spring .39. Springs 8|, 82 and 19 were rst overcome and looper pulleys 32, 3| and35 were pulled to their short loop positions. The stopping conditions for the typewheel at position 3 coming from position 21 are nearly as before, except that the overthrow or first half cycle of oscillation meets spring 39 instead of spring |1.

The above broadly describes the two typical cases of selective typewheel positioning by the means of this invention: going to a higher num- It will be noted that in either case the typewheel spins directly from the letter or character last It will also be noted that no'motion of carriage frame 5 along rails 4, 4 can have any effect on the perimeter of the path followed by tape V| 4. Hence, except for an infinitesimalpause to print, the carriage may be moving at any time.

The code receiving and storing means used and -the means to make these control the selective pol' through suitable gearing an electric motor with a flywheel and a governor, a synchronous motor or any ladequate source of power of reasonably constant speed. ,The speed of shaft 83 depends.

on the printingV speed desired, one revolution of the shaft as usual being required per letter or othercode symbol. 84 is any well-known one-revoluv tion clutch operable by either mechanical or electrical means to clutch shaft 85 to shaft 83 during one revolution and then to cause shaft 85 to stop untill or unlessv` clutch- 84 is again or has been again operated. A well-known line relay chosen and adjusted to the line or channel used and to the speed desired and an electrical stop-start distributor or equivalentare assumed to be used ,firmly to angle 86 as shown.

with the mechanismdisclosed.

Fig. 6y shows at Rin end elevation a stripof 5 code .storing electromagnets. `The detail of one yof these is better shownV in Figs. 8 and 9, because In Fig. 2,

' new code.

core; 89, 89 are spool heads on the core and 90 ai magnet coil between the spool heads. 9| is a hardened steel screw threaded into core 88 to hold it to pole piece 81. The core and the pole piece are of equal height. Lying at and iron to iron on their end surfaces is shown armature 92 having. a central tongue 93 protruding through a clearance hole 98 in brass angle 86.

Armature 92, on the slightly acute corners 91,

pivots in a knife edge manner in the re-entrant l corner formed by end of pole piece 81 and side of angle S6. Tongue 93 is drawn outwards and upwards as shown by a light spring 94 adjustable by bending spring support lug 95. Angle 86 vis tapped for adjustable armature back stop screw 95 with lock nut. VArmature 92 carries brass spring holder 99, on a narrow lug on which is forced a close wound coil of fine spring wire |00. One end of the wire extends axially beyond the coil and then bends at right angles to form sloping switch end |0| movable by armature 92 close to one surface of power bar 6B. tion of this switch end to barsl to 65 and to certain interference members carried by power bar 66 appears clearly in Fig. 1.

Pivoted at |03 in channel shaped power bar 66? foot of slot |84 as shown dotted at |06 in Fig. 1. This is the position of, switch end 0| lwhen armaf The coil f ture 92 falls against back stop screw 96. 90 of each of the five magnets R comprises two windings.l There is a main operating winding for each magnet rconnected to a well-known receiving distributor to receive each the impulse of a dif-'` ferent code period ortime channel.

Thus if marking impulses come in all i'lve code periods all ve magnets R will be energized byk their operating windings. If period 1 and 5 are marking and 2, 3, 4 spacing, then only magnets and 5 will be so-energized and the others not.` A

small winding, opposedly connected to the operat-y ing winding, forms part of `each coil 90. These five small de-energizing coils are connected in series and through interrupter |06 on shaft 85 toa source of direct current, which may be the same as is Yused to energize the operating coils of magnets R. Interrupter |86 passes no current through the deenergizing coils until power bar 66 has carried i ends |05 of U shaped interference members beyond the point of engaging arms 6|-65. Slight notches |81 are provided in arms 6 |65 to retain ends |85 once engaged. Y

The hardened steel screws 9| in the endg' of cores 88, once these magnets have been strongly energized in the operating direction, renders them very retentive or sticky, and an attracted armature 92 will retain that position until the de-Y energizng windings are energized via interrup-ter |06. vThis wipes out the previous code and the magnets are in condition to receive and retain a This new code will energize the magnets during the time that wires |85 on bar 56 are to the right of the points of arms (il-65. If a wire |05 was liftedby the corresponding switch |0| and engaged an arm, 64for example, and

The shape and relaon the code received. If it stayed down, wire |05 will drop to the bottom of slot |04 as soon as bar 55 returns to the extreme left. If the armature and switch rose again, then wire |05, on the return stroke of bar 65 and arm 64, will negligibly depress switch l0! and will then be held up by the latter until bar 5% starts to the right and grips it in notch If, however, arm 64 was not moved on the last code, yet if switch |0| is now up due to a newly received code, then, as bar 6B returns to the left, wire |05 will ride under the sloping end of arm |54r and in so doing will depress switch |0| by a little less than twice the diameter of wire |05 until wire |55 passes the point of arm 64. Switch |0| is so flexibly connected, however, by spring coil |00 to armature 2 that this amount of movement will not cause the armature to fall.

The use of ve code storing magnets and the whole described method of receiving and storing codes is not broadly new, and forms but a negligible part of this invention. The use of magnets made purposely of high residual magnetism with a cle-energizing or knockdown impulseis a convenient and novel cheap device of this sort. Any man skilled in the art can adapt to the raising ,or lowering, according to a code, of wires |05, or of a set of switches equivalent in function to switches Hl one of several well-known purely mechanical means of receiving and storing codes. This would be particularly desirable when mechanical rather than electrical timers are in use to distinguish each code impulse from the next, such as are usually called mechanical distributors.

Fig. 11 shows the typewheel, of which the various numbered parts have been identified, in its relation to the matter being typed. The type 2| at position P is the one about to be printed. The last letter printed, T, is legible although the lowest part is not visible. It is convenient,` to maintain legibility of the last letter while avoiding a ribbon shifting device, to presen-t a narrow typewriter ribbon |21 vertically before the type in position P. Ribbon |21 comes from a supply spool (not shown) at the left of the machine to left main guide |30 (Fig. 3) carried on top of hammer guide lug |23. It makes a right angle bend around guide |30 towardV the paper, also a twist, and comes to top spool guide IZB-'which is supported on rod |29 from the other hammer guide lug I3 l, of frame 5-'passi-ng. downward over this guide and between the type -faces and paper platen l.

It angles slightly away from the typewheel in this downward stretch, the more easily to clear the type faces, makes a right angle bend around lower spool guide |32 toward the back of the machine,

also a 90 twist, coming to right main guide |33.`

Guides 532 and |33 are carried on rod |34 coming from carriage frame 5. The ribbon rounds right main guide |33 to extend either to another supply spool (not shown), at the right hand side of the machine, or else to run over a pulley and back to supply spool at the left side of the machinef Arrangements for taking up and letting off type-` writer ribbons and for reversing them are veryI many and well-known. One of them may be used here. The sole peculiarities are that the ribbon feeding movements of the supply spools in this machine are preferably to be caused by the carriage return only, rather than by carriage steps or spaces, that these movements preferably should not be an integral multiple of the letter spaces and that the ribbon should not be slack.

As the carriage', 5, spaces along railsl 4, 4 during typing, with the ribbon supply spools stationary, the stationary ribbon will be drawn through the moving carriage, over the guides just described, presenting a fresh spot for each new letter. If, when the carriage retu-rns, the ribbon is shifted thereby, but not a multiple of the letter space, fresh spots will again be presented for the Whole next line, etc. This ribbon feed per line arrangement as described is a convenient one for this machine, but may be replaced by any well-known feeding arrangement. The vertical or nearly vertical position of the ribbon at the printing point is, however, to be preferred for visibility in cooperation with the non-central typing point and non-radial type relationship of this invention.

In this machine as shown the typewheel is displaced on all so-called stunt codes exactly as if they represented characters. This offers no obje'etions and avoids the construction of a device to prevent the raising of the typing hammer and centering pin on the stunt codes. Such a device might be alatch on the rear end of type hammer 28 in place of cross pin |20, and a bail to lift it, operated by the falling of any one of the stunt code bars (to be described). The word space, for which any desired code may be chosen, say code 27, is merely a blank or typeless position in the typewheel. The position S in Fig. l1 may be the word space, though no xed code and order of letters has been assumed for this machine, since its adaptability to cooperation with existing arrangements is paramount. 'Ihe typing hammer 28 falls on position S, or on any other blank position, in the usual way. Its stroke is however checked by the horseshoe collar |22 striking the back shoulder of neck |24, so that without the thickness of a type 2| interposed before the paper hammer 28 makes no mark. The blow of the hammer is cushioned by spring |25, as described. Lacking a type to strike thecompression of this spring is slightly greater, so that the impact Hon collar |22 is not sharp.

In this machine, as is usual, four codes vare reserved for machine operations other than printmg and spacing, usually called stunts. Pursuant to the requirement of cooperating with present arrangements these codes can be any four. For purposes of illustration they have been chosen thus:

Code 28-Carriage return Code 29-Line space Code SO-Shift or figures Code Sl-Unshift or letters The mechanisms for performing these stunts are controlled by four code bars. The code cuttings of the shift code bar |35 and of the unshift code bar |36 are best seen in Fig. 1. Those of the carriage return code bar S'l and of the line space code bar |38 are seen in Fig. 4. Obviously each of these bars could be cut for any desired code other than that shown.

These four code bars are pivoted at |39. They are raised by the tumblers |40, |40 (see Fig. 7), carried by power bar 66, as the latter comes to the left; they are held raised by flat top pin |4| cooperating with lugs 442-442 on all four code bars, until power bar E5 has made a portion of its power stroke. They then drop under the influence of springs sisi-|43.' A+. this time the selectable' arms 6| to 65 have each either been engaged with power bar 56 and moved from normal or will not be moved. These arms carry cross pins |44 that Y moved Yto the right.

prevent the code bars falling, when finding no notches, as the support of pin |4| is removed.

Unshift code bar |36 is so notched that it cannot fall unless all ve of arms 6| to 65 have been The notches are of such length that they do not limit the further movement of pins |44, and are cut progressively deeper the farther they are from-'pivot |39. This condition that all arms6| to 65 shall move before code bar |36 falls makes the code to drop the'latter be 1 plus 2 plus 4 plus 8 plus 16:31, which is the code above arbitrarily assigned. Shift code bar |35 has one narrow notch |45 above the normal position of cross pin |44 of arm 6| instead of a wide notch above the moved position of that pin. It is otherwise notched like code bar |36. It thus requires for falling that arm 6| be not moved and that arms 62 to 65 be moved. This corresponds to code 0 plus 2 plus 4 plus 8 plus 16:30. From dent.

Shift code bar |35 determines Ythe swinging to' the left of shift pulley 29, and hence the taking up of 31 units of length of tape |4. This causes position 32 of the typewheel, counting from datum position, to replace position 133 to replace 2, etc. These are the upper case characters. As long as pulley 29 is at the left, these characters will be positioned, instead of the corresponding letters, before the typing hammer.

Lever |48, carrying pulley 29 on a stud projecting through plate 48, is pivoted at |41. This lever is slotted through, except at the two ends, as shown in Fig. 2. Cam rider |50, with roller |5|, is pivoted in lever |48 at |49. Spring |52 causes it to follow cam |53. Rider |50 thus rocks on every cycle. The upper part of |50 is formed with an overhang or beak |54. Mounted on the side of lever |48 is a pin |56 supporting a short coil of spring wire |51 the end of which extends through the two walls of lever |48 in vertical slot |43 and is formed to a curve |58. When code bar |35 drops as described, its curved edge |58 tends to raise wire |51 into engagement in notch |59 in beak |54 of rider |50. This it cannot accomplish until roller |5| reaches the low of cam |53. Timing diagram Fig. 12 shows that this occurs quite late in the cycle.

As cam |53 raises roller 5|, notch |59 grips interference Wire |51 and rocks lever 48, with pulley 29, to the left. In the upper part of the slot of lever 48 lies latch roller |60. Latch |62, on fixed pivot |63, engages latch roller |68 beyond its shoulder |6| when cam |53 reaches its high, and retains pulley 29 in shifted or iigures position. It will be seen from Fig. 12 that all but the very start of this cam action takes placeV in the succeeding cycle. The cam rise inV the cycle initiated by the shift code (30 as elected) goes only far enough to grip interference wire |51. The code bar |35 is lifted, i. e., restored to normal at the end of the shift code cycle.

Delaying thus the extension ofv tape i4 byV pulley 29 into the succeeding cycle makes it unnecessary to spin the typewheel more than half way in any cycle. Using code 30 for shift if the 31 units of rotation due to the movement of pulley 29 by cam |53 were superimposed on the 30 units due to looper pulleys 3|, 33, 34, 35, the time allowed for typewheel rotation, as shown about 3/5 of the cycle, would have to be greater, making the cycle longer in all cases. By only spinning the typewheel to position 30 and lock- The end of code bar |35 liesV close to lever.

ing it there in the shift cycle, and letting the 31 units due to pulley 29 be delayed as described into the next cycle, even if that next cycle is on a high numbered code, (e. g., 26), the typewheel will only have to move 3l plus 26 minus 30:27 units. Were the code chosen for shift a low number, such as 1, then cam |53 could be timed to complete the movement of pulley 29 within the shift cycle. Many existing systems, use the higher numbed codes for stunts so that it was desirable for complete adap-tability to show the use of Vhigh numbered stunt codes.

There is no such problem of excessive typewheel movement in the unshift cycle if a high Y numbered code is used. The 31 extra units taken as the 31 units of therunshift code are taken up by the looper pulleys 3| to 35, thus bringing the typewheel to position 31 from whatever upper case position it had occupied. Code bar |36, therefore, when it falls, merely trips latch |62 from roller |68. This it does by striking pin |64 on latch |62 with its upper extension |55. The carriage 5 is drawn to the left (Fig. 4 view) along rails 4,4, one step in every cycle, by tape |66, which wraps on drum |61. Drum |61 is madefast to ratchet |12 and is stepped by live pawl |68 on cam ride-r arm |69 and holding pawl |1|. Cam |10 reciprocates arm |69. A gap |13 in the teeth of ratchet 12 is pro-vided to prevent feeding the carriage too far and doing damage if an operator fails to send carriage return in time. Spiral spring driven drum |15 by tape |14, (which may bev a continuation of tape |66),

the position shown where its lug |8| is against the stationary pin |82 on which holding pawl |1| pivots.

Cam plate |18 when turned counterclockwise raises pawls |68 and |1| out of engagement, letting ratchet |12 and drum |61 return to start of Y line position under Ythe pull of spring drum |15.

Cam plate |18,is moved to do this by live pawl |68 itself, when dog |83, fast to cam plate |18, is raised to engage pawl |68. Code bar |31, by bell crank arm |84, stud |89, and link |85, swings dog cam |86 to raise dog |83 by the pin |81. Live pawl |68 then catches and movers dogr||l3 and thereby turns cam plate |18 so as to disengage holding pawl |1|. able'to'engage a tooth of ratchet |12 because it carried cam plate |18. forward beneath itself. Cam plate |18, once the line of action of center passing spring |19 is past the center, remains with its lug |88 against pin |82. pawl |68 from engaging a tooth of ratchet |12 should a new code come in before the carriage is fully returned. When drum |61 and ratchet |12 are brought to start of line position a pin |98 in ratchet |12 drives cam plate |18 to where center passing spring |19 again throws it to normal. This center passing spring arrangementY is to provide for the case where the carriage return.

Live pawl |68 was not, itself,

This prevents ISI, slotted at the top, to link I 92 (Fig. 6). Spring |93 draws the latter up and to the right as shown. Link |92 thus normally presses pawl arm |94 back to stop |95. Cam |I9 is fixed on shaft ||5 as already described, and rocks slotted follower arm |91 about its center |98 on frame stud |99 once in every cycle, by means of roller 200. Spring 20| causes arm |97 to follow cam IIS. When the notches in code bar |30 agree with the pattern of pins |411 set up by the selection, it falls and, by link ISI, pulls down link |92. The hook end 202 of link |92 is in the slotted end of arm |91 so it engages tooth 203 in coming down. Pawl arm |94 is thereby swung and pawl |96 rotates ratchet 204 one tooth. This turns platen one line space. Notched plate 205 and jockey roller 206 retain it in this position until the next line space.

In Fig. 16 is diagrammatically shown an alternative connection of tape I4, in which both ends wrap on the drum I3 of the typewheel. This requires doubling the stroke of the looper pulleys compared to the Fig. 1 arrangement. It also requires a substitute for the retractor drum 3l and spring 39, which may be a yielding connection of shift pulley 29 to the shift lever |48. The advantage of such an arrangement is the lesser accuracy required in the stroke of the looper pulleys and the balanced or pure torque applied to the typewheel.

In Fig. 13, IIIA is the typewheel body mounted on stud 6A, I2 the rear flange with centering holes I5, I4 the tape and |3 the tape drum. Moulded into the type body is a thin steel fingered disc I IA carrying type 2| brazed or riveted on the ngers in the angular arrangement shown in Fig. 15. The fingers 22A are bent away from the paper as shown. A non-rotating type clamping guide 20A is pivoted at L on va suitable lug of carriage 5, and provided with a strong spring 20A and a stop 21A.

As best seen in Fig. 14, when the flat end of typing hammer 28A strikes a finger 22A, the latter is gripped between the upper end of type clamping guide 20A and the lower part of the end of the hammer 28A, and is thus advanced against the paper substantially in a parallel manner, the type 2| being itself supported by the upper part of hammer 28A. An advantage of this form `of construction is the still lower mass of the revolving typewheel, due to the type ,clamping guide-equivalent in type guiding function with disc 20 of Fig. 3-not being part of .the rotating mass, due to the type stems or 4bodies 2,2 not being used, and due to disc IIA being lighter zthan flange II.

It will be noted that on the timing diagram, Fig. l2, one suitable relation to the cycle of an ordinary start-stop five-unit code has been indicated. It is there assumed that the beginning of the stop impulse-after the code impulses have been stored in magnets R, or in any Wellfknown equivalent storage-is used to start the one-revolution clutch. This is not necessary. The mechanical cycle may be initiated at any point in the code cycle-i. e., at any phase of the receiving distributor-subject to the fact that the code should be fully stored before the power bar grips the selectable arms 6| to` 65. 'Ihe relative length of this diagram of the code times to the mechanical cycle times is to be disregarded.

Many other variations and practical embodiments of the above principles will occur to those skilled in the art, and may be practiced Without departing from the spirit `of my invention as set forth in the appended claims.

What I claim is:

1. In an automatic typing mechanism, a type member, a flexible tensile means to position said type member, a centering means more accurately to position said type member, a plurality of selected means cumulatively determining a longitudinal displacement of' a portion of said tensile means, a printing presser, and means for operating said printing presser when said centering means has positioned said type member.

2. In an automatic typing mechanism, apaper support, a carrier of types adapted to` be displaced selectively to present a desired type in printing relation to paper on said support, means to move said carrier in one sense, a flexible nonextensible tensile means to move said carrier in an opposed sense, a plurality of loopers each adapted to take up a predetermined loop of said tensile means to displace said carrier to predetermined positions, a plurality of looper movers, means selectively to render said looper movers operative under control of a selecting device and means 'to center and lock said carrier in any of several positions.

3. In an automatic typing mechanism, a type carrier having a plurality of type members, a

plurality of selectably movable members severalf ly and jointly displacing said type carrier through an equalizing connection for selectively positioning a type member for printing thereof, said connection including a a flexible non-extensible filament and a pulley, a carrier locking means for locking said type carrier in position for printing of a selected type member thereof, and a type presser for pressing a lselected type member for effecting printing thereof.

ll. In an automatic typing mechanism, a traveling carriage including a type carrier displaceable thereon, a plurality of selectably movable members not on said lcarriage adapted severally and jointly to displace said carrier on said carriage different amounts through an equalizer, said equalizer including a non-extensible filament with both ends attached on said carriage and a plurality of pulleys not on said carriage.

5. In an automatic typing mechanism, a carrier for a number of type faces, a typing bar to strike said type faces against a paper, a belt to movesaid carrier to present diierent type faces before said bar, a plurality of loopers capable of additively pulling said belt predetermined amounts, selective means to render said loopers operative in accordance with code designations, and a centering locking means for said carrier effective before said typing bar strikes and during a portion of the operating time of said loopers.

6. In a printing telegraph machine, a pivoted type carrier having a plurality of type members, a striker for striking said type members individually to effect printing thereof, means for operating said striker, a driving means for said type carrier, a drum on said type carrier, a flexible tensile member wrapped on said drum to pull said type carrier around against said driving means, movable loopers in contact with said tensile member each extending a predetermined bight therein when moved, a centering means for accurately positioning said type carrier, and means for operating said type member before said striker is operated.

7. In a printing telegraph, a set of type faces, a pivoted carrier for said set, a spring to rotate said carrier in one direction, a exible tensile "ai o agieren!) member'to-rotate itin the other direction to posi- Y cording means, a registering means for accurately'positioning said pivotedcarrier and for holding itduring part of the moving of said loopers, and a printing-bar to make an impressionofthat one of said 'set of type faces positioned before it through vsaid'tensile member and said registering means. o

' v8j. In'acode controlledVA typing mechanism, Va carriage*movablebackandforthin a path, a printing bar thereon, mounted also on said carriage a'carrierof-type faces selectively-presentable before said bar, Ypower means `causing said barvto print "individual type faces -sopresented, several pulleysA mounted Von means other than saidv carriage, ra loopy ofi-flexible tensile material operatively connected at one end'to said carrier and drawn oversaid pulleys by motion of said carriage, instrumentalitiescomprising certain of said pulleys and means other than the. motion off-thef carriage forvarying the perimeter of said loop,-and vmeans forladditively operating said instrumentalities. 1

9; -In .apage sprinter-,- a movable type carrier on saidcarriage, a loop of tape, five code loopers torenlarge said loop of.

tape by therein V.extending smaller loopstaking Y up respectively on'e, two,v four, eight and sixteen units ofV length ofsa'i'd loop Yof tape, VVVsaidloop ditalia-connecting tol-Sa-idlcarrier to positionlit Y and passing over said-'loopers, means selectively to operate Vany one or ones orfnsaidnloopers, and centeri-n'giineans -forsaidcarrier; J

-"\10.f-In-'a-pa"ge printer, AaY carriage, a'movab-le Y type carrier on said carriage, a loop ofV tape, a set ofrcode loopefrsnot on s'ai'dV carriage to control the? perimeter ofsaid loop of tape by therein controlling 'smaller' loops, said loop'of tape connecting-to saidfc-:arrierv and .passingjover' said loopers,

means selectively to operate anyone or'ones of' said loopersaV case shift looperA over which said Vmp' of :tape also passes, and means to Operate saidcase shift looper' dependent onathe operationv ofafcerta'inf combination of Vsaid code loopers. j 11. Ina printing"telegraphv machine, the .combination of 'a type Ycarrier having a nplurality of type members; a type presser for pressing said type members to effect printing thereof, selective positioning meanslfor selectively positioning said typefcarrier comprising a tape, a storage spring,

Y and severalttape take-up means selectively operable, rand registering means for supplementing ksaid selective positioning. means for positioning saidtype'carrier more accurately than said selective po'sitioninga means;

`V12.In a` page printing telegraph, a, traveling, carriage, a movable typemember thereon, a Y

spring to move said type member one way,ra tape connected at one endto pull saidy type member against4 said spring and at the other end so connected to said carriage'that the firstV end travels With said carriagevand"means not onfsaidcarriageto take up and let out saidtape to move 4said typemembereither Way.

' 13. 'In "a Vprinting telegraph, the method of selectably moving'a type 'member Vfromfany of arange of selectable Ypositionsto stop cushionedly at another that comprises: locking the type member at Vone of vthe positions while Vapplying traveling carriage, a

' member and selectably movable pulleys fselec-Vv tively to limit While said typewheel is lockedfthe.

range of action of the stronger of said springs. 15. In a printing telegraph, a weaker spring,

a stronger spring, a limit stop for the latterga type member a flexible tensile connection between said type member and said stronger spring, means selectably to vary the eiifective.length"v of said tensile connection, means including said springs to bring said type member to rest where said weaker spring is stopped by said tensile connection' to said stronger spring', Yand registering means for said type member. Y

16. In an automatic Y typing mechanism, a weaker spring, a stronger spring, a flexible tensile connection to the latter, an action limit for said stronger spring, a type member urged by said weaker spring and stopped by said flexible tensile connection, and means to take up or let out seleoted lengths of said tensile connection.

1'?. A printing telegraph machine for printingv upon a-page of paper and comprising in combination,` atraveling carriage including a disc shaped rotatable'carrier having a plurality of holes theref in, a plurality. of peripheraily. arranged individuiV ally hinged types on said carrier each attached at an angle toitscarrier radius and comprisingV lower and upper case charactersin twof-jsepf. arateA groups sequentially, a typing bar on said carriage, means for causing the typing barY toV Y individual hinges, atype registeringrspnr for engaging one of the holes in said carrier to register'it before. said bar drives: one of said types to printingV position and remaining insuch Iengagement for a dwellthereafter, a cushion stopV for said typing bar to retract at once, said bar` from the extreme `printing position-a home spring urging said rotatable carrier` towarda home'` position, a drum on said rotatable carrier, atapegfas-l tened to' and wrapping onY said drinnY in the sense to-opposeits tensile pull to Lsaid home spring and extending over1rollers to another fastening on said traveling carriage, five loopers for engaging withrsaid tape and Vcapable respectivelyofy ex-Y tending bights therein of one,` two, four, eight, and sixteen units of length' for causingone, two,

four, eight, and sixteen units of rotation'of said'v 4 carrier from its home positonrby the unwrapping of said tape from said drum,` power means for selectively energizing 'said loopers, means for operating said powermeans atleast partially during the dwell of said spur when in engagement with one of the holes in said carrier, a stop,

resilient retractile means Vhaving itsfretractile ,said powerfmeans during the"mentioned 'dwell an'd for storing energy' 'fromk said' 7 power means for rotating said carrier against said home spring after the dwell, a shift looper for taking up more than twenty-six units of said tape causing said carrier to maintain positions where one group of said types comprising characters of one case is beyond said typing bar counting toward the home position, one shift code bar, a source of power, means for operating said shift code bar for engaging said shift looper with said source of power when one combination of said live loopers is energized by said power means, a second shift code bar, and means for operating said second shift code bar for restoring said shift looper when another combination of said ve loopers is energized by said power means.

1S. In a page printing telegraph, a traveling carriage, a movable type member thereon, selective positioning means for said type member comprising a loop of tape operatively connected at one end with said type member and connected with said carriage at the other and comprising five loopers selectively operable to vary' the perimeter of said loop of tape, a carriage moving belt to restore to starting position said traveling carriage, a spring take-up for one end of said belt to cause it to restore said carriage toy starting position, means including a ratchet to advance said carriage in letter spacing steps, a holding pawl for said ratchet, a cam to disengage said holding pawl from said ratchet and a carriage return code bar operating when o-ne chosen combination is operated of said five loopers to cause to move said cam to disengage said holding pawl.

19. In a page printing telegraph, a traveling carriage, a movable type member thereon, selective positioning means for said type member comprising a loop of tape operatively connected at one end with said type member and connected with said carriage at the other and comprising five loopers selectively operable to vary the perimeter of said loop of tape, a paper platen, a ratchet to rotate it by steps, a power-driven cam, a line space code bar operating when a chosen combination is operated of said five loopers to connect said power-driven cam to said ratchet.

20. In a. printing telegraph machine, a movable type carrier having a plurality of type members and having a number of selectable stopping positions, actuating means for urging the type carrier in one direction for moving said type carrier tothe selectable stopping positions, biasing means for constantly urging the type carrier in an opposite direction with a force weaker than that of the actuating means for cushioning the stopping of the type carrier when it is, moved to a selected stopping position by the: actuating means.

2l. In a printing telegraph machine, a movable type `carrier having a. plurality of type members, a type presser for pressing said type members to eiect printing thereof, actuating means for moving the type carrier into position for printing by said type presser and a selected type member, said actuating means including a spring, a flexible tensile connection between the type carrier and the spring for enabling the spring to move the type carrier, control means for selectively varying the effective length of said connection for varying the amount of movement of the type wheel, an instrumentality for limiting the action of said spring, and checking means for checking the momentum of the type carrier after it has been moved by said actuating means.

ARTHUR H. ADAMS. 

